Montreal firefighters have been among those looking for a missing 38-year old man who fell off a boat overnight.
Initially, there were four men in the boat.
Authoirities said on Saturday it happened on the waters of Lac St-Louis near Chateauguay.
Fire officials said one fell and two others with him tried to save him.
Two men were treated for hypothermia, another for shock.
The Coast Guard has also been taking part in the search as well as an SQ helicopter and divers.